Quadratic Equations Quiz 4

The equation $x^2+x+1=0$ has

If $\frac{x}{a-b}=\frac{a}{x-b}$ then x = ……

The discriminant of the equation $x^2+4x+2=0$ is ……

The discriminant of the equation $px^2+ qx + r = 0$ is ……

The degree of a quadratic equation is

In a quadratic equation $ax^2+bx+c=0$, if $b^2-4ac$ >0 , then the roots are ……

A quadratic equation, whose roots are $2+\sqrt{3}$ and $2-\sqrt{3}$ = ……

The adjacent diagram indicates ……

If $\sqrt{x}+\frac{58}{\sqrt{x}}= 31$, then x =

If 1 is a common root of $ax^2+ax+2=0$ and $x^ 2+x+b=0$, then a. b = ……